The benefits of MODIS

Louis Reymondin

The MODIS (Moderate Resolution Imaging Spectroradiometer) sensor is on board the Terra and Aqua satellites that are part of the EOS (Earth Observing System) of NASA. They provide images of the entire planet Earth every 1 to 2 days with high radiometric sensitivity, 12 bit, 36 bands of the electromagnetic spectrum of wavelengths ranging from 0.4 to 14.4 microns. Two of these bands have a nominal spatial resolution (at nadir) of 250 meters, five of 500 meters, and the 29 remaining bands of 1 kilometer.

In addition to multispectral imagery, MODIS has 44 standard data products enabled us to improve our understanding of global dynamics and processes occurring in the earth, oceans, and atmosphere, playing a major role in the development of predictive models of global climate change, monitoring of deforestation, forest fires, droughts and floods among others.

DAPA has more than 500 grids in Latin America for the MODIS vegetation indices (MOD13) EVI (enhanced vegetation index) and NDVI (Normalized Difference Vegetation Index) every 16 days from February 2000 until today. This data is used in the development of major research projects in the program, including "Terra-i: Monitor habitat changes in Latin America using neural networks and MODIS satellite data."

Between 14 and 19 August in the First Regional Workshop on Monitoring Forest Service organized by GEO and the United States Geological Survey (USGS) in Lima, Peru, whose main objective is to provide basic knowledge in remote sensing, Karolina Argote on behalf of DAPA, will contribute to strengthening the technical capabilities of scientific and academic community working in forest monitoring, participating in a series of talks at this event.

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